[GSAS-Member] cuttlebone or not

[naturalart <naturalart@earthlink.net>]

Cuttlebone is not really bone but rather shell. cuttlebone come from squid 
which are 'directly' related to a relict group of animals called ammonites. The 
nautilus is one of the two remaining living species in this group. Maybe 
someone can explain the chemistry on this but squid die by the thousands 
regularly in the ocean. You are talking about freshwater shrimp, so obviously 
it will harden your water, but it shouldn't be toxic. Personnally I think there 
are better ways to raise your hardness or alkalinity.

Clay A.
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